Alert archive / Virginia / Flash Flood Warnings in 2021

Flash Flood Warning 13, NWS Charleston, WV

June 9, 2021Buchanan County, Virginia

NWS Charleston, WV issued this flash flood warning at Jun 9, 2021, 2:40 PM EDT for Buchanan County, Virginia. It was in force for 110 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 9, 2021, 2:40 PM EDT (18:40 UTC)
Expired
Jun 9, 2021, 4:30 PM EDT
In force
110 min
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

County Buchanan County, VA

The radar

The Charleston,WV radar (KRLX), 112 km from the middle of the area, began a volume at 18:41 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 6.7 hours before the alert went out and 228 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Roanoke, VA at 12:00Z on 2021-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 92 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 12:00Z on 2021-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
92 J/kg
Mixed-layer CIN
-99 J/kg
Mixed-layer LCL
1085 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
42 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

355 
WGUS51 KRLX 091840
FFWRLX
VAC027-092030-
/O.NEW.KRLX.FF.W.0013.210609T1840Z-210609T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
240 PM EDT Wed Jun 9 2021

The National Weather Service in Charleston has issued a

* Flash Flood Warning for...
  Northwestern Buchanan County in southwestern Virginia...

* Until 430 PM EDT.

* At 240 PM EDT, Doppler radar indicated heavy rain across the 
  warned area. Between 1 and 1.5 inches of rain have fallen over the 
  last hour. Additional rainfall amounts of 0.5 to 1.5 inches are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by heavy rain.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Grundy, Big Rock, Roseann and Vansant.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3745 8209 3744 8206 3741 8201 3739 8198
      3737 8197 3733 8198 3729 8201 3725 8208
      3724 8212 3725 8213 3725 8215 3733 8226

FLASH FLOOD...RADAR INDICATED

$$

HART
1 follow-up statement
031 
WGUS71 KRLX 092029
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
429 PM EDT Wed Jun 9 2021

VAC027-092039-
/O.EXP.KRLX.FF.W.0013.000000T0000Z-210609T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Buchanan VA-
429 PM EDT Wed Jun 9 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 430 PM EDT THIS AFTERNOON FOR 
NORTHWESTERN BUCHANAN COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3745 8209 3744 8206 3741 8201 3739 8198
      3737 8197 3733 8198 3729 8201 3725 8208
      3724 8212 3725 8213 3725 8215 3733 8226

$$

JZ

The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 8, 8:52 PM EDTFlash Flood WarningRLXDickenson3 hr

Nearby

Flash Flood Warnings in Virginia, 2021Every flash flood warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.